Closures
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function addTo(passed) {
const add = function (inner) { // creating closure
return passed + inner; //injecting var 'passed' in closure
};
return add;
}
var addThree = addTo(3);
var addOne = addTo(1);
var addFour = addTo(4);
console.log(addThree(3));
console.log(addOne(2));
console.dir(addFour);
JavaScript
INFO